Special Scientific Report: Fisheries, Números 525-540National Marine Fisheries Service, 1965 |
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Página 1
... spawning in rivers south of Cape Hatteras , N.C. , normally die after spawning , while north of Cape Hatteras the proportion of fish spawning for the second time or more progressively increases from about 15 to 25 percent in Chesapeake ...
... spawning in rivers south of Cape Hatteras , N.C. , normally die after spawning , while north of Cape Hatteras the proportion of fish spawning for the second time or more progressively increases from about 15 to 25 percent in Chesapeake ...
Página 9
... spawning time were not available , so the relation between differences or shifts in meristic counts between two separate rivers and environmental factors was not known . Lindsey ( 1957 ) , Raney and Woolcott ( 1955 ) , and Tåning ( 1952 ) ...
... spawning time were not available , so the relation between differences or shifts in meristic counts between two separate rivers and environmental factors was not known . Lindsey ( 1957 ) , Raney and Woolcott ( 1955 ) , and Tåning ( 1952 ) ...
Página 3
... spawning takes place between Point Conception and Baja California between 80 to 240 miles offshore ( Fig . 2 ) . The seaward extension of spawning has not been delimited by the present surveys . Abundance of eggs and larvae decreases to ...
... spawning takes place between Point Conception and Baja California between 80 to 240 miles offshore ( Fig . 2 ) . The seaward extension of spawning has not been delimited by the present surveys . Abundance of eggs and larvae decreases to ...
Página 5
... spawns a pelagic egg about 1.1 mm . in diameter and produces 304 eggs per gram of fish ( based on counts for six specimens ) . 3.16 Spawning The percentage frequency distribution of diameters of eggs containing yolk found within the ...
... spawns a pelagic egg about 1.1 mm . in diameter and produces 304 eggs per gram of fish ( based on counts for six specimens ) . 3.16 Spawning The percentage frequency distribution of diameters of eggs containing yolk found within the ...
Página 7
... spawning , and therefore the larval occurrences should adequately indicate the spawning season . Farris ( 1961 ) determined the daily distribu- tion of spawning by plotting the relative abundance of precleavage eggs against time of ...
... spawning , and therefore the larval occurrences should adequately indicate the spawning season . Farris ( 1961 ) determined the daily distribu- tion of spawning by plotting the relative abundance of precleavage eggs against time of ...
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Términos y frases comunes
abundance Alaska Amer American shad anchovy larvae Appendix table Atlantic Area Atlantic menhaden August Baja California ber rences taken blooms breve brevis Bull Bureau of Commercial central Baja California Chesapeake Bay coast Commercial Fisheries concentrations cruise dead fish dinoflagellates distribution eggs estimate females FISH AND WILDLIFE Florida fork length frequency fur seals growth Gulf Gymnodinium jack mackerel July June kill Lake Erie lake trout larvae Little Kitoi Lake males migration mortality Number Number Number Number Percent Occur offshore OOSTEN organisms outbreaks Paul Island pelagic Petersen tag phosphorus plankton population Pribilof Islands pups purse seine purse seine catches red tide red-tide River Rock Island Dam Ruth Lake salinity salmon sardine sea lamprey season smolts sockeye spawning Spec species Station lines striped bass surface survival Tampa Bay temperature tion Total Number toxic U.S. Fish Wildl WILDLIFE SERVICE zooplankton
Pasajes populares
Página 73 - UNITED STATES DEPARTMENT OF THE INTERIOR FISH AND WILDLIFE SERVICE UNITED STATES DEPARTMENT OF THE INTERIOR, Fred A.
Página 4 - US DEPARTMENT OF THE INTERIOR, FISH AND WILDLIFE SERVICE, BUREAU OF COMMERCIAL FISHERIES, Washington, DC, June 13, 1962.
Página 1 - EH 1959. Vertical distribution of pelagic fish eggs and larvae off California and Baja California. US Fish Wildl.
Página 10 - Hydr., 36: 57-130. 1941. Age and growth of the rock bass, Ambloplites rupestris (Rafinesque), in Nebish Lake, Wisconsin.
Página 7 - This project covers the expenses of the two American members of the International Board of Inquiry for the Great Lakes Fisheries...
Página 7 - An investigation of the relative efficiencies of natural and artificial propagation of sockeye salmon (Oncorhynchus nerka) at Cultus Lake, British Columbia.
Página 57 - No. 23, 26 pp. 1948. A record of pilchard eggs and larvae collected during surveys made in 1939 to 1941. US Dept.
Página 60 - I would appreciate it. (The information referred to follows :) DEPARTMENT OF THE INTERIOR, FISH AND WILDLIFE SERVICE, BUREAU OF COMMERCIAL FISHERIES, Washington, DC Hon.